diff --git a/bin/ebuild.sh b/bin/ebuild.sh
index bf8844f..25cd04b 100755
--- a/bin/ebuild.sh
+++ b/bin/ebuild.sh
@@ -6,12 +6,6 @@
 PORTAGE_BIN_PATH="${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}"
 PORTAGE_PYM_PATH="${PORTAGE_PYM_PATH:-/usr/lib/portage/pym}"
 
-# Ensure that /dev/std* streams have appropriate sandbox permission for
-# bug #288863. This can be removed after sandbox is fixed and portage
-# depends on the fixed version.
-export SANDBOX_WRITE="${SANDBOX_WRITE:+${SANDBOX_WRITE}:}/dev/stdout:/dev/stderr"
-export SANDBOX_READ="${SANDBOX_READ:+${SANDBOX_READ}:}/dev/stdin"
-
 # Don't use sandbox's BASH_ENV for new shells because it does
 # 'source /etc/profile' which can interfere with the build
 # environment by modifying our PATH.